1 . __________ (keep) calm is harder when problems come out. (所给词的适当形式填空)
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2 . The old man escape _______ (hurt) by the bear finally. (所给词的适当形式填空)
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3 . He is fond of________ (play) football.(所给词的适当形式填空)
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4 . We can’t imagine the trouble they had ________ (practise) their spoken English.(所给词的适当形式填空)
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